The Freedom Rail Upright is the second component needed to install the freedomRail system and serves as the support for all components. Allows your shelves to be adjusted up or down as your needs change. Uprights easily hook over the Hanging Rail and do not need to be attached to the wall. From the Upright, brackets, O-Boxes, and other freedomRail accessories are attached. Manufactured from high quality 12 gauge steel that will look and function like new for years to come.- Coated with baked on epoxy that prevents the yellowish discoloration commonly found in painted and dipped metal. - Does not need to be attached to wall allowing for the entire system to be changed or moved.